12289960

素因数分解:

$2^3\times 5^1\times {\mathrm{19}}^1\times {\mathrm{103}}^1\times {\mathrm{157}}^1$

素因数の和:290

約数の個数: 64

約数和(自身を含む): 29577600

約数和(自身を除く): 17287640

約数列:

[1, 2, 4, 5, 8, 10, 19, 20, 38, 40, 76, 95, 103, 152, 157, 190, 206, 314, 380, 412, 515, 628, 760, 785, 824, 1030, 1256, 1570, 1957, 2060, 2983, 3140, 3914, 4120, 5966, 6280, 7828, 9785, 11932, 14915, 15656, 16171, 19570, 23864, 29830, 32342, 39140, 59660, 64684, 78280, 80855, 119320, 129368, 161710, 307249, 323420, 614498, 646840, 1228996, 1536245, 2457992, 3072490, 6144980, 12289960]

約数ペア:

[(1, 12289960), (2, 6144980), (4, 3072490), (5, 2457992), (8, 1536245), (10, 1228996), (19, 646840), (20, 614498), (38, 323420), (40, 307249), (76, 161710), (95, 129368), (103, 119320), (152, 80855), (157, 78280), (190, 64684), (206, 59660), (314, 39140), (380, 32342), (412, 29830), (515, 23864), (628, 19570), (760, 16171), (785, 15656), (824, 14915), (1030, 11932), (1256, 9785), (1570, 7828), (1957, 6280), (2060, 5966), (2983, 4120), (3140, 3914)]